### 3.17.2 Animation of a 3D graph : `animate3d`

`animate3d` can create a 3-d animation with
function graphs depending of a parameter. The parameter is specified as
the third argument of `animate3d`, the number of pictures
as fourth argument with
`frames=`number, the remaining arguments
are the same as those of the `plotfunc` command, see
section 3.2.2, p. ??.

Input :

`animate3d(x``^`

`2+a*y``^`

`2,[x=-2..2,y=-2..2],a=-2..2, frames=10,display=red+filled)`

Output :

`a sequence of graphic representations
of z=x``^`

`2+`*a*`*y``^`

`2 for 11 values of `*a*` between -2 and 2`